Mechanism for weaving striped cloth



MECHANISM FOR WEAVING STRIPED CLOTH Filed 001. 16, 1929 2 sheets sneet 1lnvenfor. DClVId (ldones 1 Anya June 17, 1930. D. c. JONES 1,755,339

MECHANISM FOR WEAVING STRIPED CLOTH FiledOct. 16', 1929 2 Sheets-Sheet 2as 3o a; 21: -ll

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Patented June 17, 1930 DAVID o. JONES,;OF CHESNEE, soumncARoLInA,-AssIenon To DItAPER CORPORATION,

PATENT omen OF HOPEDALE, MASSACHUSETTS, A CORPORATTON F MAINE MECHANISMFOR WEAVIN G sinnrrnn oLo'rH Application filed. October 16, 1929. sawno. @9919.

This invention relates to a mechanism for producing a striped efi'ect orshadow stripes in cloth during the weaving operation.

- The invention has for its object to pro-' duce this striped effect orshadow stripes by raising the whip roll at predetermined intervals forpredetermined periods.

The invention has for its further object to provide a simple andefficient form of mechanism for securing the desired result which mayalso be readily embodied in existing looms.

These and other objects and features of the 55' invention will appearmore fully from the accompanying description and drawings and will beparticularly pointed out in the claims. As the invention relates to afeature which may be embodied in looms of various types, 2'0 and as buta few of the usual loom instrumentalities are necessary to anunderstanding of the invention, and as the whole subject matter outsideof the present invention is well known and familiar to those skilled inthe art, it is only necessary here to illustrate and describe sufficientportions of an ordinary type of loom in order to disclose a simple andpreferred form of the invention.

In the drawings:

Fig. 1 is a side elevation partially broken away and with many of theparts removed of a loom of an ordinary type, together with a 7 simpleand preferred form of the invention embodied therein.

Fig. 2 is an end elevation of a portion of the construction shown inFig. 1.

Fig. 3 is a detail showing a detent feature.

The loom illustrated is of an ordinary type comprising the side frames 1and 2, the

lay 3 supported by the pivotally mounted lay swords 4, the loom arch 5connecting the side frames, the usual cam shaft 6, the cam 4 7 on thecam shaft for operating the cam follower 8 which in turn operates theconnection 9 to the usual weft hammer,not shown, the warp beam 10 withits gudgeons 11 journalled in the side frames, and other well knownfeatures and elements, all operating 0 in the usual manner.

sheet of warps 1-2 is shown as extend- 1ng up and over a-bar, shown asthe usual whip Troll 1?), thence through thelease-rods 1 1,

then dlvlding into the shed 15', and thence through the reed 16 andthence over the breast beam in-the form of the completed cloth to the;cloth roll, not shown.-

" has been f u t at if the tension in the Warp sheet between the war'p 5beam the shed increased at intervals, there will be formed f in thewoven cloth? transverse stripes,- sometimes termed steam stripes,resulting-from this variation 1n tension and this striped effect canbeutlhzed to'g'iv'e 'a pleasing design in finished cloth by havdesiredintervals ing' the stripes occur at and be of desired widths.-

In this inventionthis striped efie'ct is forined'by placing a bar,suclr'as the whip roll 18, beneath "the'sheet of warpsadjafcent the warpbeam or betweenthe warp beam and the'shed, and raising this baror rollbodily at predetermined intervals for predetermined periods.

/ Preferably the usual; whip roll 13 i is "uti' lized. This whip roll isfreely journall ediii bracketarms 17 "secured to a shaft 18 jou r nalledat the rear'ofthe loom frame so that as the supporting bracket arms 17rock with the shaft 18, the Whip roll "has a vertical bodily.

movement. In order to raise thevvhip roll bodilyat the requiredintervals and during 13l16 required periods" to secure the desiredstriped effect, a simple and practical form of mechanism has beendesigned andf'is here illustrated. jshaft19 is mounted on'a portion'of'the loom franie, such as the side frame; 1, and has secured theretoa' pair of sprocket wheels 20 21 A second ,stnb shaft 22 issecure'd toanother portion "of the leemnamesach asthe arch 5 and hassecured theretoasprocket ,wheel 23, a ratchet'wheel 24and "a"de'tent'wheel'25." Thesethreeelements 23,, 2d, and 25 are rotated in'unisons te'p by step from asuitable moving part of the loom'. For/that purpose the cam followen8aiid" connect on 9, which are operated by the p 7 anthems shaftfi, are convenientlyuti-v .liz'e'd, a pawl 26 being pivotally secured at itslower end at 27 to the connection 9 and at its upper end riding on theratchet wheel 24. Over-running of the shaft 22 is prevented by a detentarm 28 pivoted at 29 on the loom arch, having a roll 30 at its free endengaging the serrated edge of the detent wheel 25 and yieldingly held inengagement therewith by the spring 31. I V v r A pattern chain 32 ishung loosely on the sprocket wheel 20 and may be of any length desiredand provided with any suitable number of risers 33 located at suitablepoints in the length of the chain. These risers are shown as presentingat their efiective portions anti-friction rolls. An arm 34 is secured toDAVID C. JONES.

the movable whip roll support'such as the bracket arm 17 and extendsdown into the path of the pattern chain 32 and its risers 33, this arm34 being curved at its lower end readily to cooperate with the rolls ofthe risers.

The operation of the construction will now be apparent. As the weavingoperation proc-eeds and the cam shaft 6 is rotated, the

, sprocket wheel 20 will be rotated step by step, thus advancing thepattern chain 32 and carrying the risers 33 past the end of the arm 34at predetermined intervals and during predetermined'periods asdetermined by the character of the pattern chain and the timing of themechanism. Each time a riser 33' passes the arm 34, the whiproll 13 isbodily raised, thus producing an increased tension in the warp shedadjacent the, warp beam or between the warpbeam and the shed resultingin a striped effect in the woven cloth. 7

There is thus presented a simple and efiicientmechanism which may eitherbe built into new looms or readily applied to existing looms forproducing an increased tension in a the warp sheet between the warp beamand the shed at predetermined intervals and for predetermined periodsthereby toproduce a transverse striped effect in the cloth.

Having thus described the invention, what is claimed as new,.and desiredto be secured by Letters Patent, is: i 1. A loom comprising a whip roll,a sup port for the whip roll mounted on the loom frame and movable toefiect vertical bodily.

movement of the whip roll, a sprocket wheel,

a pattern chain on the sprocket wheel,:risers on the pattern cham, anarm extending from the whip roll support into the path of the risers onthe pattern chain, and means for rotating the sprocket wheel thereby toincrease the tension in the warps at prede termined intervals forpredetermined periods alndhproduce a transverse striped efi'ect in the 00t 2. A loom comprising a cam shaft, a Whip roll, a support for the whiproll mounted on the loom frame and movable to effect vertical bodllymovement of the whip roll, a sprocket wheel, a pattern chain on thesprocket wheel, 7

